CarlislePaWx

My temperature has dropped 8 degrees in the past 90 minutes from what was the high of the day at 62.1 now down to 54.1. Wonder what's with that?

The pendulum once again has reversed and is heading back away from majority ZR to majority sleet. Still have another 36 hours to push the snow line further towards our region. While heavy sleet is horrific for the roads, it can't hurt the trees and shrubs. Between the two I'd much prefer IP over ZR.

Not if the NAM is correct.

Boy, the 12 nam is certainly interesting for the upcoming winter event. Breaking it down, the precip starts as primarily sleet around 0Z. It sleets for 3-4 hours until around 4z, accumulating roughly 0.7". It then changes to freezing rain with only light amounts of around 0.1" (not accrual) between 4z and 13z. It then changes to rain for the remainder of the event, which is only another 3-4 hours, with less than 0.1". Total qpf for the event is about 0.4" of liquid. Temp remains between 32-33 until the event ends by 16z. Then the temp goes up to the upper 30's for the afternoon before crashing back down below freezing by around 23z. The only interesting (frozen) part of the storm will be the sleet for several hours Thursday evening (imo). This breakdown is for the area roughly between me and MDT.

It's pretty wild watching the pendulum swing back and forth with the Thu/Fri storm p-types. The 6z run took away a lot of the snow with me getting around 2" total. The sleet shot up dramatically with my area almost the bullseye for sleet accumulations of around 2". Freezing rain is not so bad with around 0.15". So, on to 12z we go. Still around 16 more runs before the start of the event...lol. My low this morning was 12.0 exactly. @Voyager...I can tell you that there is nothing wrong with your new station's anemometer. It is your location / exposure hampering the good gusts. I don't have good exposure at my new home unfortunately also. My peak wind yesterday was 29mph. I know it was considerably higher than that. As is always the problem with most weather stations where all the sensors are together, most people will mount the station closer to the ground than the rooftop because of accuracy of the temperature. For me, personally, the accuracy of my temperature readings outweighs my wind accuracy and I accept that. My sensor is at 2 meters which is NWS protocol. Wind measurements are taken at 10 meters. The only person I've ever known who had a 10 meter tower for the anemometer is @Cashtown_Coop.

Euro doesn't like what the GFS says. I can't see surface temps but the low ends up in northwest PA Friday morning at 12z. 850's around +4. Much rainier picture. Plenty of time for adjustments.

Skies rapidly clearing with sunshine. Temp dropped to 29.6 before leveling off. Now back up to 32.4. Dusting already disappearing. Fun while it lasted. NWS said the squall was flying along at 55mph.

@Blizzard of 93...Boy, what a change for the better on the GFS 12z. No freezing rain. Very little sleet, and now 10" snow for me. Will the pendulum swing back the other way now?

In the squall. Temp just dropped from 37 to 30 in less than 10 minutes. Howling winds but the snow definitely wasn't blinding. I have a dusting, and skies are quickly brightening to my north.

Winds are slowly picking up now maybe around 10 mph with gusts to 20, as the temperature has warmed from around 54 degrees 2 hours ago to the current 60.4. So far I've recorded 0.49" of rain. Looking at the radar there appears to be a mini squall line mostly oriented N-S between PIT and JST. Perhaps it will hold together to give one last burst of rain. Once again we have a sub-1000mb low as I am currently down to 997mb. I'm guessing there is still more dropping to come before fropa in about 4 hours.

Woke up this morning to a nice little coating on everything including the street. Measured 0.3". Temp got down to 14.0. Right now it's back up to a "balmy" 21.9. The great thing was my front yard, which faces south and fairly quickly melted yesterday, was recoated again. I have no doubt it will be gone by later this afternoon. On the other hand my backyard didn't lose much yesterday and has about a solid 1" remaining. >>>Forgot to mention the dew point was down to 8, which bodes well for low temps tonight perhaps touching the single digits.

I melted down my 1.0" of snow and measured 0.08". That produces an SLR of 12:1. Even though the temp has remained below freezing so far (it's 31.3 now), the snow cover is slowly receding with more blades of grass becoming visible. Still solid cover though.

Good morning guys. I missed all of the "fun" between 3 and 5am. Looks like @Cashtown_Coopand I were the low-ball sites. I recorded 1.0", and just like that everything is white again (except conveniently, sidewalks and street). It might last a little bit until Tuesday. Hopefully the arctic front will do its magic later this evening and send snowsqualls my way. If I get in on one, it will be the first one of the season for me. Temp dropped overnight to better than I thought with 27.7. It was 36.0 at midnight, so a pretty decent drop from the snowfall. Temp now very slowly rising, back up to 29.5. Maybe we hold below 32 this afternoon?

At 1:00am here in Carlisle it is snowing lightly. The temperature has dropped to 31.1 degrees. Dew Point 29. Wet Bulb 30.6. Mulch and grass both totally white now with between 0.2" and 0.3" of accumulation. Last report for the night. Will wait to see what surprises greet us in the morning. By the way, in the grids for the lsv we've got snow squalls accompanying the arctic front overnight Sunday into Monday. Maybe some added excitement plus some additional accumulating possible.

Only 10 minutes since my last post but I'm down another whole degree to 32.4. Wet bulb has dropped to 31.6, so further downside seems probable. Snow coming down solidly. I don't think it's moderate yet but getting close. Mulch has caved. Grass is caving. Sidewalks just beginning to show signs of caving while driveway and street are just wet. And to think, just a week ago we were convinced that there were no chances to see snow for the next 7-10 days. Things can sure change in a hurry, like this event. >>There, I knew if I typed long enough I'd get the temp to go down further...now 32.2, so virtually there now.

Snow began here about 15 minutes ago. Temp has responded by starting to drop from 36, now down to 34.5. Not much more to go before accumulating begins on mulch/grass/snowboards (lol). Dew point is 30 and wet bulb, which was 32.4 has risen to 32.9. The snow intensity is going to have to bring the temp down an extra degree or two to make it to 31 or 30. I'll be surprised if it ever drops below 30 before ending. But, with darkness, we only need 32 to accumulate. >>As I'm about to post this the temp is now down to 33.8...nice drop so far. Intensity picking up a bit now as well. I'll probably give another update before going to bed around 1:00. >>now down to 33.6...nope, now 33.4. It's going down faster than I was expecting but likely will slow down, hopefully not until it reaches 32.0.

40-degree diurnal today for me. Low this morning was 20 while the high this afternoon was 60. Boy it sure felt great out there a few hours ago. Spent 20 minutes in the sun talking to my neighbor. Little to no wind.

17.4 degrees for the low this morning. I was expecting a low below 20 last night because I was already down to 23 around 1:00am and the dew point was around 18. Skies clear, winds calm. I even have scattered snow patches left in my back yard. What was a surprise was waking up to those snow maps for Sunday. Wow.

ALEET ALEET !!! I see SLEET! lol Temp 30.7 and ZR appears to have ended. IP very light though, but I did hear it hitting my window.

Finally dropped below 32.0 about 20 minutes ago. Now down to 31.1 with very light freezing rain / drizzle. There has only been a few hundredths since going below with virtually no sign of any accumulation on surfaces as of yet. I just can't get over how long it took for many of us to drop to freezing. First the models said 1:00am, then they said 4:00am, then they said 7:00am (last night's run) but it took until between 1:00 and 2:00pm. Six hours later than progged only 2 runs ago and more than 12 hours later than it was showing about 2 days ago.

I just cracked below 33 and am at 32.9, however it doesn't matter since the precip is all but over. Don't look at the GFS as 0Z and 6Z both give MDT 1" of snow for their entire runs. Obviously that will change at some point. On the bright side, we're going to have nothing but sunshine and normal to very slightly above temps for the next 7 days. Normal temps right now are lows in the low 20's and highs around 40.

Hey, I'm right there next to you...haha

We're nearly exact. Currently 33.6 with light rain. 0.13" (only!) today+ 1.30" yesterday for a storm total of 1.43". My temp never got above 41.7 the entire event. That helped "preserve" the remaining snow in my backyard. About half of it is now bare grass but the other half still has over an inch, which I guess I get to hold on to for at least a few more days.

Ok, after bringing in my clear-vue to measure, it shows 1.21" of rain fell for calendar date 2/3. So my Ambient, which I already knew over-records, over-recorded by 0.09" which is an error rate of roughly +7%. Fortunately, the Ambient stations allow you to enter calibration offsets into the consoles for every parameter. I already have it set up to under-record by 8%. It will take a few more good precip events to zero in on the correct offset. I made the current adjustment several months ago. It seemed to be fairly accurate with heavier events. I am going to pull down the negative offset another 2% to 10% total and I'll see where that leaves me. For those of you who have full weather stations that record rainfall, I would encourage you to consider purchasing a clear-vue gauge if you don't already have one. It is invaluable all year round since in the winter, if I'm going to have an all-snow event, I do what I just did and removed the inner cylinder and am simply leaving the outer cylinder in place. For the snow events it's great because I can bring the gauge indoors where I can melt the snow down and then measure the amount of water contained in the snow. That's how you come up with the SLR (snow to liquid ratio). Worth the investment even though it generally runs around $50. But, in my opinion, you should always have this type of gauge as a backup to your tipping bucket which then reassures you that your precip is accurate.

At midnight here it is 41.0 degrees and has been very steady between 40 and 41 all evening. The rain has stopped for the moment. My tipping bucket gauge showed 1.30" for the day. I'm about to go out back and measure and empty my clear-vue gauge. Since I know there will be at least some freezing rain I'm taking out the inner cylinder and placing the outer cylinder on my snowboard. I'm sure I'll wake up at some point during the night to look at my outdoor temp. I won't think about getting out of bed until the temp has at least dropped to 32. If last night's gfs is accurate I am supposed to receiving another 0.50" between now and the end of the storm. I have no idea how much of that will fall above 32 versus below 32. We shall see.